NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
175 reports125,000 miles · Mar 6, 2011
Electrical SystemInjury
WE ARE HAVING SERIOUS ELECTRICAL ISSUES WITH OUR 2003 CHEVROLET SUBURBAN 1500 Z71. IT STARTED WITH THE SEAT WARMERS ONLY WORKIING OCCASIONALLY, THEN WHEN I WAS TRYING TO START IT ONE DAY THE DS AUTOMATIC POWER SEAT DEPLOYED ME AND SMASHED MY CHEST AND LEGS ALL THE WAY INTO THE STEERING WHEEL AND DASH I WAS PINNED AGAINST THE ST…
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WE ARE HAVING SERIOUS ELECTRICAL ISSUES WITH OUR 2003 CHEVROLET SUBURBAN 1500 Z71. IT STARTED WITH THE SEAT WARMERS ONLY WORKIING OCCASIONALLY, THEN WHEN I WAS TRYING TO START IT ONE DAY THE DS AUTOMATIC POWER SEAT DEPLOYED ME AND SMASHED MY CHEST AND LEGS ALL THE WAY INTO THE STEERING WHEEL AND DASH I WAS PINNED AGAINST THE STEERING WHEEL AND DASHBOARD UNTIL MY HUSBAND HEARD ME SCREAMING AND CAME TO GET ME - IT DID THIS ON ITS OWN, I HADN'T TOUCHED A THING OTHER THAN TURN THE KEY TO START POSITION. THEN THE DS POWER SEAT BUTTONS STARTING WORKING IN REVERSE I.E. PUSHING FORWARD ON THE BUTTON SENDS YOU BACKWARDS AND PUSHING BACK SENDS YOU FORWARD, THEN THE SERVICE 4WD LIGHT CAME ON THE DIC AND STAYED ON FOR AWHILE, THE SEAT WARMERS STARTED TO WORK AGAIN ON OCCASION AND THEN QUIT ALTOGETHER...AGAIN., NOW THE CLUSTER PANEL ...SPEEDOMETER, RPM AND OTHER GAUGES ARE INCORRECT MORE OFTEN THAN NOT. WE ARE HAVING TO USE A GPS TO MAINTAIN SPEED LIMITS. *TR
NHTSA ODI #10386612
45,000 miles · Mar 2, 2011
Power Train
2003 CHEVORLET SUBURBAN - TRANSMISSION FAILED AT 45, 000 MILES. SINCE IT WASN'T UNDER WARRANTY ANY LONGER, PURCHASED A NEW TRANSMISSION FROM GM WITH A 3 YR 100, 000 MILE WARRANTY. AFTER 3YRS, 4MONTHS, THE VEHICLE NOW HAS 91,000 MILES AND THE TRANSMISSION HAS FAILED AGAIN. EACH TIME THE COST IS OVER $2500. *TR
NHTSA ODI #10386199
Mileage unknown · Feb 14, 2011
Tires
TL*THE CONTACT OWNS A 2003 CHEVROLET SUBURBAN 1500 EQUIPPED WITH HANKOOK DYNAPRO AS TIRES, SIZE POOH/ DOT NUMBER T79NJNH1609. THE CONTACT STATED HE RECEIVED A VOLUNTARY RECALL FROM THE MANUFACTURER. THE VEHICLE WAS TAKEN TO REPAIR SHOP FOR THE TIRES TO BE INSPECTED. THE MECHANIC STATED THE TIRES WERE NOT INCLUDED IN THE RECALL. …
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TL*THE CONTACT OWNS A 2003 CHEVROLET SUBURBAN 1500 EQUIPPED WITH HANKOOK DYNAPRO AS TIRES, SIZE POOH/ DOT NUMBER T79NJNH1609. THE CONTACT STATED HE RECEIVED A VOLUNTARY RECALL FROM THE MANUFACTURER. THE VEHICLE WAS TAKEN TO REPAIR SHOP FOR THE TIRES TO BE INSPECTED. THE MECHANIC STATED THE TIRES WERE NOT INCLUDED IN THE RECALL. THE CONTACT STATED HE INSPECTED THE TIRES AND NOTICED THE TIRES WERE IN THE SAME DOT RANGE. THE VEHICLE WAS TAKEN BACK TO THE REPAIR SHOP WHERE THE TECHNICIANS STATED THE TIRES WERE INCLUDED AND NOTICED THERE WAS TWO GASHES ON THE SIDE WALL OF THE REAR DRIVER'S SIDE TIRE. THE TECHNICIAN STATED ONE GASH WAS APPROXIMATELY SIX INCHES LONG AND THE OTHER WAS APPROXIMATELY FOUR INCHES LONG. THE TIRE WAS REPLACED WITH THE SPARE TIRE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. THE APPROXIMATE TIRE MILEAGE WAS 13,500. THE VEHICLES CURRENT MILEAGE WAS 133,740.
NHTSA ODI #10382584
106,000 miles · Jan 16, 2011
Power Train
(REDUCED ENGINE POWER) WILL NOT ACCELERATE FASTER THAN 30 MPH. SHUT OFF ENGINE FOR 15 SECONDS AND START UP AGAIN AND IT HAPPENS 10 TO 15 TIMES A DAY, EVEN AT 65 MPH ON THE HIGHWAY. (NO POWER) AND NO HELP FROM GM DEALER SHIP. *LN
NHTSA ODI #10376832
84,432 miles · Jan 12, 2011
Service Brakes, HydraulicCrash
CORRODED BRAKE LINES ON 2003 CHEVROLET SUBURBAN CAUSED A FRONT END CRASH WHEN BRAKE LINE BURST AT CORROSION. I WAS LUCKY TO HAVE HAD A SNOW BANK IN MY PATH AND NOT ANOTHER CAR. I APPLIED THE BRAKES COMING TO A STOP LIGHT WHEN THE BRAKE PEDAL WENT TO THE FLOOR. MYSELF AND MY WIFE WENT THROUGH THE RED LIGHT, UNABLE TO STOP, WITH N…
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CORRODED BRAKE LINES ON 2003 CHEVROLET SUBURBAN CAUSED A FRONT END CRASH WHEN BRAKE LINE BURST AT CORROSION. I WAS LUCKY TO HAVE HAD A SNOW BANK IN MY PATH AND NOT ANOTHER CAR. I APPLIED THE BRAKES COMING TO A STOP LIGHT WHEN THE BRAKE PEDAL WENT TO THE FLOOR. MYSELF AND MY WIFE WENT THROUGH THE RED LIGHT, UNABLE TO STOP, WITH NO TRAFFIC COMING FROM THE CROSS STREET, LUCKILY. I WAS ABLE TO GET HOME SLOWLY AND FOUND THE BRAKE LINE CORRODED AND BRAKE FLUID SQUIRTING FROM THE BRAKE WHEN PRESSURE APPLIED UPON INSPECTION. *TR
NHTSA ODI #10376333
18,000 miles · Dec 16, 2010
Electrical System
GOT A 2003 CHEVORLET SURBURAN. THE REAR DOOR BE SHOWING OPEN N THE OIL GAUGE,TEMPERATURE GAUGE,RPM, N SPEEDOMETER NOT WORKING. *TR
NHTSA ODI #10370984
38,900 miles · Dec 10, 2010
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2003 CHEVROLET SUBURBAN 1500. THE CONTACT WAS DRIVING 5 MPH WHEN HE APPLIED THE BRAKES AND THEY DID NOT RESPOND. THE CONTACT HAD TO ENGAGE THE EMERGENCY BRAKE TO STOP THE VEHICLE. THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER WHERE THE MECHANIC ADVISED HIM THAT THE METAL BRAKE LINE WAS RUSTED. THE VEHICLE …
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TL* THE CONTACT OWNS A 2003 CHEVROLET SUBURBAN 1500. THE CONTACT WAS DRIVING 5 MPH WHEN HE APPLIED THE BRAKES AND THEY DID NOT RESPOND. THE CONTACT HAD TO ENGAGE THE EMERGENCY BRAKE TO STOP THE VEHICLE. THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER WHERE THE MECHANIC ADVISED HIM THAT THE METAL BRAKE LINE WAS RUSTED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 38,900.
NHTSA ODI #10369913
85,219 miles · Dec 4, 2010
Electrical System
I WAS DRIVING TO A STORE IN MY CITY WHEN IT FELT LIKE I WAS NOT DOING THE SPEED LIMIT AND GOING SLOWER THAN NORMAL. WHEN II GOT TO THE STORE AND TURNED OFF THE CAR, I SAW THAT THE SPEEDOMETER WAS REGISTERING 20 MPH. I STARTED THE CAR BACK UP AND IT DROPPED THE SPEED READING BY 5 MPH. I DID THIS 3 MORE TIMES TILL IT REGISTERED…
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I WAS DRIVING TO A STORE IN MY CITY WHEN IT FELT LIKE I WAS NOT DOING THE SPEED LIMIT AND GOING SLOWER THAN NORMAL. WHEN II GOT TO THE STORE AND TURNED OFF THE CAR, I SAW THAT THE SPEEDOMETER WAS REGISTERING 20 MPH. I STARTED THE CAR BACK UP AND IT DROPPED THE SPEED READING BY 5 MPH. I DID THIS 3 MORE TIMES TILL IT REGISTERED ZERO MPH. WHEN DRIVING HOME, I NOTICED THAT I WAS STILL DRIVING SLOWER THAN NORMAL AND WHEN I GOT HOME AND TURNED OFF THE CAR THE SPEEDOMETER READING WAS SHOWING 25 MPH. I LOOKED ONLINE AND SAW THAT OTHERS ARE HAVING THE SAME PROBLEM. THIS PROBLEM CONTINUES TO OCCUR EVERY TIME II AM DRIVING MY 2003 CHEVROLET SUBURBAN. I HAVE NOT TAKEN IT TO GET FIXED YET AND HAVE CONTACTED CHEVROLET TO SEE IF THEY WILL FIX THE PROBLEM FOR FREE SINCE IT SHOULD NOT BE HAPPENING. THIS COULD POSSIBLY AFFECT THE VEHICLE SPEED CONTROL WHEN SET. *TR
NHTSA ODI #10369176
55,000 miles · Nov 21, 2010
Electrical SystemPower TrainService Brakes, Electric
I GOT A 2003 CHEVROLET SURB. THE REAR DOOR KEEP COMING OPEN ON IT OWN,THE SPEEDOMETER DOES NOT WORK,OIL GAUGE,AND THE TEMPERATURE GAUGE NOT WORK. IT HAD START NOW WHEN START TO CRANKED IT THE BRAKE BOOSTER LIGHT COME THE BATTERY LIGHT COME SAYING NOT CHARGING. *TR
NHTSA ODI #10367040
60,000 miles · Oct 27, 2010
StructureUnknown Or Other
WHILE DRIVING ON THE FREEWAY A LOUD POP WAS HEARD INSIDE THE VEHICLE FOLLOWED BY A SUDDEN AND PRONOUNCED INCREASE IN WIND NOISE. THE VEHICLE SUFFERED A STRUCTURAL FAILURE IN THE REAR TAIL GATE WINDOW HATCH. METAL FATIGUE CAUSED THE LEFT WINDOW HATCH HINGE TO SEPARATE FROM THE VEHICLE FRAME. THIS PRODUCED A POTENTIALLY HAZARDO…
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WHILE DRIVING ON THE FREEWAY A LOUD POP WAS HEARD INSIDE THE VEHICLE FOLLOWED BY A SUDDEN AND PRONOUNCED INCREASE IN WIND NOISE. THE VEHICLE SUFFERED A STRUCTURAL FAILURE IN THE REAR TAIL GATE WINDOW HATCH. METAL FATIGUE CAUSED THE LEFT WINDOW HATCH HINGE TO SEPARATE FROM THE VEHICLE FRAME. THIS PRODUCED A POTENTIALLY HAZARDOUS SITUATION IF AS A RESULT OF THE VEHICLE SPEED THE WINDOW HAD FULLY SEPARATED FROM THE VEHICLE AT HIGH SPEED IN TRAFFIC. THE GLASS WINDOW AND FRAME WOULD HAVE STRUCK THE TRAILING VEHICLE RESULTING IN POSSIBLE INJURY OR DEATH.
NHTSA ODI #10363268